Transmission relining band



Dec. .23, 1924. 1,520,154

D. B. SMITH TRANSMI SS I ON REL INING BAND Filed Dec. 5. 1925 2 Sheets-Sheet 1 IV ENTOR' Dove-ms MlTH ATTO NEYS.

Dec. 23, 1924. 1,520,154

D. B. SMlTH TRANSMISSION RELINING BAND Filed Dec. 5. 192; s

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Patented Dec. 23, 1924.

DOUGLAS B. SMITH, OF SAN FRANCISCO, CALIFORNIA.

TRANSMISSION RELINING BAND.

Application filed December 3, 1923.

To all whom it may concern:

Be it known that I, DOUGLAS B. SMITH, a citizen of the United States, residing in the city and county of San Francisco and State of California, have invented new and useful Improvements in Transmission Relining Bands, of which the following is a specification.

This invention relates toliners for the bands of transmissions of the planetary type, and particularly pertains to certain improvements over the type of liner disclosed in my prior application entitled Transmission relining band, filed September 2a, 1923, Serial No. 664,363.

In general, liners of the type referred to are flexible in construction and are capable of being positioned on the transmission bands upon removal of the transmission cover and the old band linings and by inserting the ends of the new linings between the bands and the drums. The liners may then be forced around the periphery of the drums between the latter and the bands and connected to the bands at their ends. By the use of this type of linerthe operation of -relining planetary transmission bands is expedited, as the necessity of completely disassembling the transmission when the bands are in need of relining is eliminated.

It is the principal object of the present invention to generally improve the construction of liners of the type referred to whereby to provide an inexpensive and improved liner which may be easily and quickly inserted in place in a planetary transmission without disassembling the latter, which liner is fitted with means for guiding it around the transmission band when being inserted in place and for maintaining the liner in a correct position relative to the band upon which it is fitted. The liner is further provided with improved means for a locking engagement between the ends of the latter and the transmission band.

In carrying out this object I form the ends of the liner band in a manner permitting them to be easily locked into engagement with the ends of the transmission band upon which it is mounted. Also, at one end of the liner, and at other points around its periphery, I arrange guide lugs engageable with the sides of the transmission band Serial No. 678,194.

for guiding the liner when it is being inserted which lugs are also adapted to aid in maintaining the liner in correct position relative to the band.

The invention is illustrated by way of example in the accompanying drawings in which:

Fig. 1 is a transverse section through a planetary type of transmission showing my improved band liner being inserted therein Fig. 2 is a side elevation of the transmission band with my improved liner fitted thereto.

Fig. 3 is a perspective View of the liner disclosing its improved construction.

Fig. 4 is two fragmentary views in perspective of one end of the transmission band and one end of the liner disclosing the manner in which the end of the liner is connected to the transmission band.

Fig. 5 is a fragmentary view of one end of the liner prior to its being bent into shape for engagement with the end of the transmission band.

Fig. 6 is a similar view disclosing a slightly modified form. 7

Referring more particularly to the accompanying drawings, 10 indicates the transmission case of a planetary transmission which in the present instance is illustrated as the type used in the Ford automobile. The top ofthe case 10 is formed with an opening 11 which is provided with a removable cover plate (not shown). The case 10 encloses a planetary transmission having the usual drums 14; and operating bands 15. The lining of these bands may be replaced to insure proper operation of the transmissions. For this purpose I provide a liner 16 which is clearly illustrated in Fig. 3 and comprises a flexible band 17 preferably of steel and a treated fabric lining 18 which is riveted or otherwise secured to the interior surface of the band. The terminating flexible band so as to engage the sides of the transmission band for the purpose of guiding the liner when the latter is being fed around between the transmission band and thedrum,

The prongs 19, 20, and 21 constitute means for forming a locking engageinent between the ends of the liner and the ends of the transmission band.

Referring to Fig. l, it is seen that the prongs 19, and 21 maybe bent to embrace the U-shaped end lug 22 of the transmission band. The short prong 21 may bebentto. extend between.theupstanding legs of :the

end lug-22, and then bent to engage the rear surface of the lug. The long. prongs 19 and 20may bebent inwardly against thefront surface .of the lug in. parallelism. therewith and then hooked at their ends toembrace the upper endsof the upstanding portions of the .lug.

The modified-form disclosed inFig. 6 is verysimilarto that shown in Fig. 5 with the. exception that.the short prong 21 is eliminated and short side prongs 25' are substituted therefor. These. prongs are adapted tobe bent at right, angles to the surface band to engage the sides of the slotted opening in thelug on the transmis-. sion. band. v

To position the liner in place without dis-i assembling the entire transmission, the transmission. case cover is removed. The band. operatingv shafts are then disconnected from the bands and the old liners removed.

in Fig; 5 with the exception that the guide lugs 22 are bent into position This latter end sof the liner is. then inserted between, the transmission. band and, the drum, as. shown in Fig. 1 with the guideilugs 22am,-

eiigageinent withopposite sides of, the transs missionband. The reliner 'may then be. forced around the periphery ofthe band hetweenit andthe drum until the ends of the liner are alignedzwith the endJlugs-on,v theband. Thepre-bent end of the liner is then connected to the adjacent end lug. The. irongs of the other end of. the liner are then bent as described to form a locking engagement between the liner and the opposite end lug.

To firmlv maintain the liner in correct position relative to thetransmissi-on .band, at the center of the liner 1 form additional guidelugs 26. These lugs are formed integral with the flexible band and extend at right angles to the surface thereof to engage the sidesrof the transmission hand. These guide lugs assist the locking connections between theends bf the transmission hand and the ends of the liner in maintaining the liner in correctposition onthe band and to prevent:it from, becomingaout of alignment and, interfering, with .the proper operation of the transmission.

In F 4; it is illustrated thatwhen the liner is properly positioned $011 the trans inissionizband, the lugs. 22, are in engage ment with the sides of the end lug on the transmission band.

From the foregoing. it, isobvious that th reliner hereshowirand described is .of simple and inexpensive ci instruction and. may be, insertedinto plaee inwa transmission quicklv and with ease andv will engage'the transmission bandgin suchi a manner that it will not become out, of alignment, and interfere with tlie operation ..oftl1e transmission.

lVhile I have shownthe preferredfornrof Having thus .descri-bed my invention, what i I claim and desire to secuneibylletters Pat.- ent is A- liner for v a .transinission,.or likei band comprising; a ,fiexible; band-having a lining secured on its interior, sun-face, eachiend of said flexible: band; terminating in two elongated side; prongseadapted to: bet bent into locking engagement, with the, legs of the vlJ-shapech,end ,lug of the-transmission bandga shortqcentral, prong. adapted, z'tO,.l)G- bent, betweenthelegs of thetend-lugs, and guide lugs-at inen-end of .the.,.il.exible,band extendingufromthe outer ed es of; the. side pron s and .adapted to. be, bent till} right angles toithe surface-0f thefiexible band to engage the... sides of. the transmission i band to guide the liner ,whernit. is. being inserted into place.

DQUGLAS B, SMITH. 

